Thermostatic regulating device.



- E. W. COMFORT.

THERMOSTATIG REGULATING DEVICE.

APPLICATION FILED AUG.2, 1911.

Patented July 9, 1912.

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INVENTOR.

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" Tan sTATns PATENT orr es.

EDWARD w. COMFORT,

COMPANY, or

on oHIoAeo, rumors, ASSIGNOR To AMERICAN MOISTENING BOSTON,MASSACHUSETTS, A CORPORATION OF'MAINE.

THERMOSTATIC REGT J'LATING DEVIC E.

' Specification of Letters Patent.

Application filed August 2, 1911. Serial Nb. 641,898.

T 0 all whom it may concern Be it known that I, EDWARD \V. COMFORT,

of Chicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in ThermostaticRegulating Devices,of which the following is fiuenced by the temperature and the humidityof the surrounding atmosphere to effect the control nism by or throughwhich directly or indirectly additional moisture may be supplied to saidatmosphere.

One object of this invention is so to construct a thermostaticregulating device having independent expansible elements adapted to beinfluenced respectively by the temperature and humidity of thesurrounding atmosphere that the expansion or contraction of either ofsaid elements may efiect the operation of closing or opening of a valve.

Another object of this inventionis so to construct a thermostaticregulating device comprising expansible elements for; the valve of apressure system that said valve and the outlet controlled thereby may beadjusted in angular position. with reference to said elements, wherebythe degree of moisture relative to the saturation point may becontrolled.

Another object of this invention is to provide an apparatus of thecharacter described having adjustments so that the pre-determinedrelationship of the expansible elements to the regulating mechanism maybe changed to meet varied requirements.

Other objects of the invention will appear from the followingdescription.

The invention consists in the thermostatic regulating device hereinafterdescribed and claimed.

Figure 1, represents a the improved thermostatic regulating device shownin relation to the outlet pipe of a pressure system by or through thecontrol of the pressure of which moisture may be supplied throughmechanism which is not shown as it does not necessarily form part ofthis invention. Fig. 2, represents a sectional view of parts of the sametaken in line 22, Fig. 1, looking in the direction indicated by orregulation of -mecl1a-- front elevation of the arrows on said line. Fig.3, represents a sectional view taken on line 33, Fig. 1.

Similar numbers of reference designate corresponding parts throughout.

As shown 1n the drawings, in its preferred form, 5 indicates a basehaving the posts -6 and 7 in which are respectively mounted the wet bulbthermostatic element 8. having the adj usting screws 99 and the dry bulbthermostatic element 10 having the adjusting screws 1111. Thethermostatic elements are disposed at substantially right angles to eachother, as shown. The angular connections of these elements with theregulating Ifatented Ju1y9,1912.

device or'valve are such that if one, element tends" to operate thedevice in one direction by expansion to produce an effect, expansionofthe other element would tend to operate the device in an oppositedirection and produce an opposite effect. These tendencies withreference to each other may be varied by mechanism hereinafterdescribed. These elements 8 and 10 are made ofany suitable materialusually employed for such elements and are or may be of any suitablelength,

diameter and shape. Moisture is supplied t9 the element 8 bythe wick 12which extends over said element andinto the moisture container 13supported adjacent to element 8 and connected with the tank 14. Theinner ends of the elements 8 and 10 are for convenience of construction,herein shown as pivotally connected to an extension of the valve 24, butI do not limit myself to this construction.

On the base .5 is pivotally mounted, by means'of the pivot 15, the plate16 having the studs or projectionsl'i, 17 and 18. To the outer ends ofthe studs 17, 17 are secured the flexible arms 19, 19, which in thedrawing are shown as flat springs, and to these flexible arms 19, 19.issecured the relativelyrigid cross piece 20 carrying the out let 21 ofthe flexible pressure pipe 22 one ortion of which pipe is secured to thestud 18. Mounted on the cross piece 20 or to an extension thereof is theflexible valve arm 23 having the valve 24: which cooperates with theoutlet 21 to control the flow of pressure medium from said outlet and tothus efl'ect, through the flow of such pressure medium or the decreaseof pressure in said pipe 22 the regulation of any pressure controlledmechanism connected with said pipe 22. By

' swinging the plate 16 on its pivot 15 to various positions indicatedby the scale marks,

a, b, respectively on said plate 16 and on the base-5 the valve 2 1 maybe adjusted with 5 relation to the angle of extension of the elements 8and 10 whereby adjustment of the devic= is effected to maintain thedesired humidity. \Vhen the temperature rises unduly the element 10 willexpand and cause 10 the v v'e 22 to move toward the outlet 21 to reduceor shut oif the pressure medium lssulng from said outlet, or, if thetemperature'falls said element 10 Wlll contract and open said valve 24:.If, when the valve 2 1 is closed the humidity of the atmosphere risesabove the normal or above the point at which the device is set, theevaporation of the moisture from the wick 12 of the wet bulbthermostatic element 8 is decreased causin a relative increase in thetemperature 0 said element 8, and said element expands and acts on thevalve 24; as the open ing of the valve 24 .is resisted by checkment 10such action of element 8 effects the lateral movement of the support 20by the yielding of its arms 19, 19, in which lateral movement thesupport 20 with its mouth piece 21 diverges somewhat from the path inwhich the valve 24 and its arm 23- are forced by said element 8 wherebya separation'is effeeted between the valve 2 1 and the outlet 21 andthepressure medium, escapes from said outlet.

It is a fact that within the limits of temthis apparatus is designed tooperate, the dry and wet bulb temperatures for any percentage ofhumidity bear always a constant ratio, the beginning or zero of saidtemperature-being taken at a point about 1% above zero F. It is alsotrue that under conditions of saturation of 100%humidity the dry and wetbulb temperatures are always the same. In the apparatus shown, if thedry and wet bulb elements are alike and placed at right angles to eachother and the valve device is so placed as to operate in a directionperpendicular to a line bisectingthe angle between the elements it isplain that the valve will remain stationary with reference to its seatunder the limited act-ion of the elements 8 and 10, if each is affectedby the same temperature change. If the dry and wet bulb temperaturesshould differ, when the apparatus is adjusted for 100%, then an actionon the valve with reference to its seat would take place by theexpansion of either of the elements 8 or 10 which in turn would operate'on the humidity supply to restore the balanced temperature. If acondition of humidity of less than 100% is desired a different ratio ofaction of the thermostatic elements on the valve device must be had andto obtain this ratio the plate 16 is swung 5 on its pivot 15. By reasonof the flexibility of the attachments of the elements to their supportsand the exceedingly slight range of movements of their free ends(practically microscopic) the action of either element cannot beconsidered as affecting-the other, resulting in an independent action.

WVhile I have herein shown a "mple form of support for the outlet andits valve whereby the outlet and valve may have relative movement or, byreason of which support'and its flexible arms the outlet and valve mayswing, I do not thereby intend to limit my invention to suchconstruction or to any other specific construction.

The outlet 21 may represent one terminal of an electric circuit and thevalve arm 23 the other terminal of said circuit the opening and, closingof which terminals may through of energy, and a pair of thermostaticelements operating independently on said-device, such elements having adifferent degree of action on said device caused by their differentangular relations theretol 4 2. A thermostatic regulating devicecomprising a pressure pipe having an outlet, a yielding support forsaidoutlet, a valve having a connection with said support, and a pair ofthermostatic elements operating independently of each other on saidvalve and. adapted to be influenced respectively bythe dry bulb and wetbulb temperatures of the a1r.

3. A thermostatic regulating device comprising a pressure pipe havinganoutlet, a yielding support for said outlet, a valve having aconnection with said support, and a pair of thermostatic elementsadapted to be influenced respectively by the dry bulb and wet bulbtemperatures of the air, operating independently of each other on saidvalve, one of said elements acting in a direction to deflect saidsupport.

4. A thermostatic regulating device comprising a pressure pipe having anoutlet, a yielding support for said outlet, a valve connected with saidsupport, and a thermo-- static element connected with said valve andoperating through said valve on the sup port to efi'ect relativediverging and converging movement of said valve and its outlet.

5. A thermostatic regulating device comprising a pressure pipe having anoutlet, a movable support for said outlet, a valve connected with saidsupport and cooperating ing on said valve to efiect movements there Locaes of, and a second thermostatic element acting on said valve" and,through said valve, on said movable support to .e'fiect movementsthereof independently ofthe action of the v first-mentioned thermostaticelement.

6. A thermostatic regulating. device comprising a base, a memberpivotallymounted on said base, a pressure pipehaving an outtlet mountedon said pivoted member; a valve .'for said outlet, and a pair ofangularly disprising a base, a member pivotally mounted. thereon foradjustment, a support yieldingly 2O mounted on said member, a pressurepipe having an outlet mounted on said support, a valve having an armattach'ed to said support, and a pair of angularly disposedthermostat-ic elements, adapted to be influenced respectively by the drybulb and Wet bulb temperatures of the air, having their outer ends fixedand their inner ends operatively connected with said valve. I

8. A thermostatic regulating device comprising a pair of independentangularly disposed thermostatic elements, and a con-- trollingdevicehaving a movable member with which said elements are operativelyconnected. T

9. A thermostatic regulating device comprising a support movably mountedand carrying one member of a regulating system,-a

second member of said system movable With I respect to said support andconnected thereto, and a pair of thermostatic elements angularlydisposedv and 'operatively connected With said second member.

. EDWARD W. COMFORT.

fWitnesses':

HENRY J. MILLER,

E. S. RooHE.

